SERIES METAL TUBE VAREA-METER STRAIGHT THROUGH TYPE ROTAMETER

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1 USFilter s Wallace & Tiernan Products (USF/ W&T) Straight Through Metal Tube Varea- Meters are available in a variety of tube sizes, flange faces, and ratings. These are suitable for harsh process conditions and are designed for the measurement of high-volume flows of aggressive fluids and gases. They have high pressure and temperature limits and give reliable flow measurements over a 10:1 range. As a standard feature, a rugged, magnetically coupled flow indicator is provided. An optional flow transmitter is available to provide local indication as well as a ma output. Meters conform to NACE Standard MR-01-75, covering hydrogen sulfideresistant surfaces. TECHNICAL INFORMATION FEATURES ANTI-MAGNETIC-PARTICLE FLOAT The extra long float magnet has a reduced flux density and is located above the metering disk. This discourages accumulation of magnetic particles, specially on the disk edge where they can cause errors in indication. Meter design directs the flow into a pattern, which scrubs the float and guides clean. The Varea-Meter is ideal for suspensions and slurries. NO FLOAT EXTENSIONS When the float is at rest, nothing projects beyond the flanges. Spool pieces are not required for installation and a frequent cause of damage when removing meters from a line is gone. In and out piping is vertical. RELIABLE MAGNETIC COUPLING For reliable indication a powerful magnetic linkage exists between the float magnet and the indicator or transmitter magnets. Transmission and indication are reliable even under sudden flow surges. EASY CHANGE-OUT, EASY COUPLING The indication unit and the transmitters are interchangeable. A mounting clamp attaches them to the meter tube. The same clamp attaches a transmitter or flow switch 180 degrees from the indicator or transmitter. Clearance between any of these units and the tube leaves room for steam or electric tracing. EASY FIELD CALIBRATION Straight Through Varea-Meters can be bench calibrated. After mounting in process piping, a minor zero adjustment is made with a screwdriver. There is no need to break piping to get at the top of the meter when making this adjustment. GENERAL TECHNICAL DATA Accuracy 2% of full scale with standard calibration. Special calibration to 1% of full scale. Range 10 to 1 Dial Length 6 inches. Dial Units Percent of maximum flow is standard. GPM water, SCFM air, or special graduations are optional. Tube and Float Materials Tube material 316 stainless steel. Float 316 stainless steel or Hastelloy C. Write for TI UA, which is a detailed listing of meter compatibility with a wide range of fluids. Connections ANSI 150 Lb. ~ 600 Lb. Raised face 150 lb. and 300 lb. in carbon steel, 316 stainless steel. All other facings available in 316 stainless steel only. (Extra low carbon stainless steel available on meters with 150 lb. flanges only.)

2 SELECTION PROCEDURE FOR GAS SERVICE Determine the capacity range, temperature and pressure capability, materials of construction, and options required for each meter. From chemical supplier, determine float material. Table I capacities are air SCFM at 14.7 PSIA and 70ºF. If the gas is other than the above, its flow rate must be converted to SCFM air (Equivalent Flow Rate) Maximum Temperature - Degrees F TABLE A - PRESSURE AND TEMPERATURE LIMITS A B C D E Maximum Pressure - PSIG Legend: A 150 lb. ANSI flanges, C 600 lb. ANSI flanges, all tube sizes 2-inch tube B 300 lb. ANSI flanges, all tube sizes D 600 lb. ANSI flanges, 1-1/2 inch tube 1100 E lb. ANSI flanges, 1/2-, 3/4-, or 1-inch tube 1500 TABLE B - FORMULAS Fluid Condition Equivalent Flow Rate = Desired Flow Rate x Correction Factors Standard (QS) QE (SCFM) = QS x FG x FP x FT x FU Weight (W) QE (SCFM) = W x 13.33* x 1/FG x FP x FT x FU *Substitute for when using Hastelloy C float. HOW TO DETERMINE AIR EQUIVALENT 1. From Table B select appropriate Formula to determine Equivalent Flow Rate (QE). 2. From Table C determine FG from Specific Gravity Correction factors. 3. From Table D determine FP from Back-Pressure Correction factors. 4. From Table E determine FT from Temperature Correction factors. 5. From Table F determine FU from Unit Conversion factors. 6. Work Formula to obtain Equivalent Flow Rate (QE). 7. Use Equivalent Flow Rate to select tube and float code from Table I on page 4. TABLE C - GAS SPECIFIC GRAVITY CORRECTION FG TABLE D - OPERATING PRESSURE CORRECTION FP TABLE E - OPERATING TEMPERATURE CORRECTION FT FG = SP.GR. x 7.96 FLOAT SP.GR. FLOAT SP.GR. 316SS = 7.96 HASTC = 8.94 FP = psig FT = TABLE F - UNIT CONVERSION FU F 530 LITERS/MIN X = CU FT/MIN CU METERS/MIN X = CU FT/MIN LB/MIN X 1.0 = LB/MIN KG/MIN X = LB/MIN QE SCFM AIR EQUIVALENT = DESIRED FLOW RATE (LBS/MIN) x 3.65 x SPEC. VOL. USE STEAM TABLES TO DETERMINE SPECIFIC VOLUME OF STEAM CU FT/LB EXAMPLE: QE SCFM = x 3.65 x

3 SELECTION PROCEDURE FOR LIQUID SERVICE Determine the capacity range, temperature and pressure capability, materials of construction, and options required for each meter. From chemical supplier, determine float material. If the liquid is other than water, the desired units are other than GPM, therefore its flow rate must be converted to GPM water (Equivalent Flow Rate). Specific Gravity TABLE G - LIQUID-SPECIFIC GRAVITY CORRECTION FE Float Material FE 316 Stainless Steel FE Hastelloy C Specific Gravity Float Material FE 316 Stainless Steel FE Hastelloy C Note: To determine FE for specific gravities not shown in Table G, use liquid specific gravity correction equation. HOW TO DETERMINE WATER EQUIVALENT For liquids with viscosities greater than the viscosity ceiling, consult distributor. For liquids with specific gravity other than 1.0, follow the formula to determine Equivalent Flow Rate in GPM (QE). Equivalent Flow Rate = Desired Flow Rate x Correction Factors TABLE H - UNIT CONVERSION FU IMP GAL/MIN x = GAL/MIN LTR/MIN x.2642 = GAL/MIN LBS/MIN x.1198 SL = GAL/MIN KG/MIN x.2641 SL = GAL/MIN LIQUID-SPECIFIC GRAVITY CORRECTION EQUATION FE = SP.GR. QE GPM = QD x FE x FU 1. From Table G, determine FE from Specific Gravity Correction factors. 2. From Table H, determine FU from Unit Conversation factors. 3. Work formula to obtain Equivalent Flow Rate (QE). 4. Use Equivalent Flow Rate to select tube and float code from Table I on page 4. 3

4 TABLE I - ORDERING NUMBERS FOR TUBES AND FLOATS Equivalent Capacity Tube Size Inches Min. Operating Pres. for Gas Service PSIG Viscosity Ceiling CSS Pressure Drop Inches Water ANSI Flange Size Tube Float GPM SCFM / B / B / B / B / B / B / B / B / C / C D / C / B / C D / /4 12 C / /2 24 E D / /2 24 E / /2 24 E D F / /2 24 E F F / /2 24 E F F F F432 4

5 TABLE J - ORDERING PROCEDURES FOR TUBES AND FLOATS Basic Arrangement 522 Output 0 Indicator Only (Standard) Indicator with GP Integral Switch for low flow Indicator with I.S. Integral Switch for low flow Indicator with GP Integral Switch for high flow Indicator with I.S. Integral Switch for high flow Connection M2 RF-150 lb. M4 MA MB MC MD ME MF MG RF-300 lb. FF-150 lb. FF-300 lb. RF-600 lb. LG FEM 600 lb. LG GRV 600 lb. SM GRV 600 lb. RJT 600 lb. Meter Body Stainless Steel 6 CRS Flange/316 Body Tube Size Select tube code from shaded area in Table I. Electronic Transmitter* or Exterior Flow Switch Electronic Transmitter 6 HAZ ma 2-Wire X-mitter Exterior Flow Switch X None (Standard) A GP 1 Switch B GP 2 Switches C GP 1 Switch/1 Relay D GP 2 Switches/2 Relays G HAZ. 1 Switch/1 Relay H HAZ. 2 Switches/2 Relays * Select either Exterior Flow Switch or Electronic Transmitter Material T Glass Window U Scale D B P I Plastic Window (Std.) Description Standard % Air Special Gas Standard % Water Special Liquid Float Select float code from shaded area in Table I. Float Material S 316 Stainless H Tag: X 1 2 X Hastelloy C Description None (Standard) Stainless Steel Foil Voltage for Barrier (Integral Switch Only) Description None (Standard) 24V 120V 240V ORDERING PROCEDURE Example: To order a 1/2" Metal Tube Meter with indicator only with plastic window, 316SS 150 lb. flanges and float having a maximum capacity of 7.2 GPM water specify: 5220M22008XUIB410SXX 5

6 ELECTRONIC TRANSMITTER USFilter s Wallace & Tiernan Products (USF/W&T) Varea-Com explosion-proof Electronic Transmitter provides accurate magnet angle detection and computation of the angle to a 4-20 ma industry standard output signal. This compact, microprocessor-driven device is capable of filling flow-correction needs at the meter, providing accurate flow information remotely to external support systems. The patented magnetic sensor with automatic gain control enables a high dynamic capture range without sacrificing accuracy. FEATURES SEPARATE FLOW INDICATION The scale and pointer readout is independent of the transmitting mechanism. The pointer indicates flow rate even if the transmitting element is removed or if power fails. EASY ADDITION IN FIELD Any model can be ordered mounted on a new meter or can be easily added to an already-installed meter. Field installation requires calibration to the meter. DESIGN AND FEATURES NEMA 4, FM-Approved Hazardous Area enclosure Smart, microprocessor-based field transmitter; 2-wire, low power Patented sensor with micro-processorcontrolled gain 4-20 ma Analog Output for magnetic angle signaling. Voltage range: 8.28 VDC 11-calibration-point transmitter linearization and storage in nonvolatile memory External Zero Button Wire Adjustable low-cutoff Adjustable low-pass filter PC-interface (no external power required) Accuracy better than 0.5% (over the range from 0.0 to degrees, pickup accuracy ~0.1 degree) Electronics designed to meet international certifications and CE requirements. TECHNICAL DATA Accuracy Combined meter and transmitter accuracy is 2% of full scale (1% with custom calibration). Sensitivity 0.2% of full scale. Repeatability 0.3% of full scale. Speed of Response Complete response to a flow-rate change in 0.5 seconds. Output Signals 4-20 ma DC flow proportional. Electrical Requirements Input: 24 VDC Current Consumption: 5 ma signal current. Temperature Range Maximum fluid temperature is 600 F; ambient range is -13 to 140 F. Electrical Classification As an explosion-proof arrangement, the transmitter is FM-approved as explosionproof for Class I, Division 1, Group A, B, C, and D hazardous locations; and FM-approved as dust-ignition-proof for Class II, Division 1, Group E, F and G hazardous locations; suitable for Class III, Division 1. Connections Enclosed 1/2" conduit connection. Transmitter to receiver, unshielded wires. Dimensions For complete dimensions, please refer to CN UA. 6

7 EXTERNAL FLOW SWITCH USFilter s Wallace & Tiernan Products (USF/W&T) External Flow Switch is a compact option that gives reliable high and/or low flow switching. The External Flow Switch contains a powerful rotating magnet that responds linearly to float position. Its switches are long life, hermetically sealed reed types. Almost frictionless rotation of the switch magnet and its powerful bond with the float magnet give a dependable magnetic coupling. Even under sudden flow surges, switching remains reliable. The switch is available in a UL-listed, hazardous location* arrangement (Series 5500) and a general purpose arrangement (Series 5600) in a NEMA 4 enclosure. The External Flow Switch is easily added in the field with the meter in the line. No extension rod, on interference with vertical piping. Switches can be set to open or close on increasing or decreasing flow. In the general purpose model, this is done without removing the cover. A screwdriver adjustment sets each switch independently over 0 to 100% of the flow range. *As defined in Article 500, NEC. TECHNICAL DATA Repeatability 0.6% of full scale. Electrical Ratings Series 5600 General Purpose: one or two switches rated 250 ma at 48 VDC or 120 VAC resistive or 50 ma at 48 VDC or 120 VAC inductive; one or two single-pole, double-throw relays rated 10 amperes at 28 VDC or 120 VAC; coil supply 120 VAC, 50/60 Hz. Series 5500 Hazardous Location: one or two single-pole, double-throw relays rated 10 amperes at 120 VAC; coil supply 120 VAC, 50/60 Hz. UL-listed for Class I, Division 1 & 2 Groups C and D or Class II, Division 1 & 2 Groups C and D or Class II, Division 1 & 2 Group E, F, and G. Temperature Limits Ambient, -20 to 120 F. Actuating Time Reed switches open in one millisecond. Enclosures Heavy cast aluminum (NEMA 4) with corrosion resistant finish. Dimensions For complete dimensions, please refer to CN UA and CN UA. 7

8 INTEGRAL FLOW SWITCH USFilter s Wallace & Tiernan Products (USF/W&T) Integral Flow Switch is a low-cost switch that mounts inside the meter s indicator and enables remote monitoring of either high or low set points. The switch is housed in the indicator, which is in a NEMA 4 enclosure with a plastic window; a glass window is available as an option. There is also an FM-approved, intrinsically safe arrangement with a power supply and an integral (to the power supply) relay available for Class I, II & III, Division 1 & 2 hazardous areas. FEATURES ALARM OPERATION The user can easily set the switching point by removing the indicator cover and moving the switch pointer tip (located in the slot) to the desired set point. Any value along the slot can be used as the desired set position. The placement of the pointer tip provides a local and visual indication of the set point. The disc mounted on the indicator needle actuates the limit switch within the housing. This compact, inexpensive switch gives a reliable high- or low-flow signal even under sudden flow surges. The alarm can be set to open or close on increasing or decreasing process flow. USFilter Corporation reserves the right to change the specifications referred to in this literature at any time, without prior notice. Varea-Meter and Varea-Com are trademarks of USFilter Corporation and its subsidiaries. TI UA 7/05 TECHNICAL DATA Specifications Electrical Classification: NEMA 4 for General Purpose; Intrinsically Safe for Hazardous Areas Class I, Div. 1 Haz Group A, B, C, D Class II, Div. 1 Haz Group E, F, G Class III, Div. 1 in accordance with Instruction Book Dwg Supply Voltage: NEMA 4 30 VDC or less Intrinsically Safe 24 VDC, 120 VAC or 240 VAC (based on barrier selected) Repeatability Intrinsically Safe Alarm:.0004 in. of the set point. General Purpose Alarm:.0002 in. of the set point. Ambient Operating Temperature NEMA 4-13 to 131 F Intrinsically Safe -13 to 140 F Shipping Weights (lbs.) Tube Size ½" ¾" 1" 1½" 2" Meter with Magnetic 25* 25* 25* 40* 55* Indicator * Add 8 lbs. for GP Flow Switch, 9 lbs. for HAZ. Flow Switch. Add 4 lbs. for HAZ. Area Transmitter. To find out more about how to put USFilter to work for you, contact us at Wallace & Tiernan Products 1901 West Garden Road Vineland, NJ phone fax For more information, call or visit our website at USFilter